High blood pressure, low pressure is what causes

High systolic pressure refers to high systolic pressure, low diastolic pressure refers to low systolic pressure, high systolic blood pressure, diastolic pressure may be caused by excessive bleeding, hyperthyroidism, heart failure, etc.

1. Excessive blood loss

if the patient loses too much blood, so that the body is in a state of stress, causing vasoconstriction or spasm, resulting in a decrease in total blood volume, the above phenomenon occurs.

2. Hyperthyroidism

patients due to excessive secretion of thyroid hormone in the body, so that the body metabolism speeds up, acting on the heart, resulting in abnormal heart function, causing high systolic pressure, diastolic pressure.

3. Heart failure

If the patient has heart failure, the heart pump function weakened, so that when the heart relaxes, blood flow has a small effect on the blood vessel wall, causing this phenomenon.